Molding-machine for making molds in sand



, www M w 2 v Hy (No Model.)

A. 210B'. MOLDING MACHINE FOR MAKING MOLDS IN SAND.

120.3222015, Patenemuly '14, 1885,

WMJVESSES/ UNITED STATES PATENT OFFICE.,

ARTHUR RICE, OF NEW ALBANY, INDIANA, ASSIGNOR TO THE PEERLESS MANUFACTURING COMPANY,

OF LOUISVILLE, KENTUCKY.

lVIOLDlNG-IVIACHINE FOR `MAKING M OLDS IN SAND.

SPECIFICATION forming part of Letters Patent No. 322,203I dated July 14, 1885.

1 application mea May 2o, 1385. (No model.)

To all whom it may concern:

Be it known that I, ARTHUR RICE, a citi-` zen of the United States, residing at New Al-` casting, of a simple and efficient device for forming the sprue or gate, as the hole for introducing the molten metal into the mold isindifferently called in the foundry.

For convenience, the device will be hereinafter referred to as the sprue-stick7 and the hole made by it the spru e, the channel or channels leading from the sprue to the body ofthe mold being, technically, the gate or gates.7 Y

The invention has special reference to a sprue-stick for the sandmolding machine forming the subject-matter of my application for Letters Patent, Serial No.'l33,133, filed May 26, 1884. However, I do not confine its usefulness to that machine, since, obviously, it may be employed in other machines; but

I for convenience of illustration and description I will set forth the inventionin connection with said machine.

The invention consists in a many-part spruestick, one member of which is a part of the pattern, co-operating therewith and )Vith a movable templet in molding the sandffirimthe1 ask, and the remainder a movable member acted upon by the binder to bury it in the sand, as I will now proceed to particularly set forth and claim.

In the accompanying drawings, in the several gures of which like parts are similarly designated, Figure l is a top plan view of sufficient of my sand-molding machine referred to to illustrate the invention. Fig. 3 is avertical section of the same, taken in the plane of line .r w, Fig. 1. Figs. 2 and 4 are respectively similar views of portions of the same machine with a different form of sprue-stick.

a is the frame; n, the pattern bed-plate stationary on the said frame; q, the movable false part; -t t, the pitmen for raising and lowering said false part; Z,`the movable templet;` o', the

half-flask; q', the ears for receiving lugs fv from the half-flask to connect said flask laterally with the false part; y, the binder pivoted to the vertical post w of the false part; and w',- the hook rising from said false part with which the binder engages to lock the halffia-sk in position for molding. t' j is the inner member of the templet, "and m the conventional pattern, all showmand for convenience lettered as in my application referred to.

To the pattern bed-plate is secured as 4part thereof the member -A `of the sprue-stick, which in shape is asthe necessities of the case may demand. It is composed, by preference, of metal, and extends up through a suitable orifice in the templet. Bis the other member of said stick, separate from but co-operating with the former. This member'B is recessed to receive within it the member A, and by preference is of funnel shape, in order to make a aring mouth to the sprue. The pattern may have means for forming the usual gates or runners, as indicated in Fig. l. In using this sprue-stick the halffiask is putin place on the machine and filled with sand, the member A projecting into it. The member B is then pressed into the sand so as to slip down upon the member A, and until its upper surface is on a level with that of the half-flask. rlhe binder is then swung around in position and engaged with the hook w', and the molding proceeded with as usual. The mold being finished and the machine at the end of its upstroke, the binder is swung back, the member B removed, and then the ask may be taken time below the upper surface of the templet,

and hence offering no obstacle to such removal. In the movement of the machine the member A of the stick telescopes in the member B, thus keeping the parts in alignment and insuring a perfect sprue.

In Figs. 2 and 4 the member A is as in Figs. l and 3; but the member B is made as an inverted hollow truncated cone, with a cylindrical or angular base,which projects into a corresponding opening, C, in the binder, and is provided with a turn-button, D,which engages lugs E E on the binder to lock said member thereto. In using this form of device the binder .is swung around and locked as soon as the ask is lled, and then the member B isput in place through the opening G in the binder and locked thereto by the turn-button D. In removing the ask the member B is rst detached before swinging back the binder. In either case the binder receives the member B and affords a base of resistance for it in the formation of the mold, and the member A,be ing a fixture and practicallya part of the pattern, cannot well be disarranged.

I prefer to screw-tap the member A i'n the pattern bed-plate, so that it may be readily renewed or replaced, and so that my invention may be conveniently and economically applied to machines already built.

The stick may be made in more than two parts if necessary. l

I am aware that it is not new on the one hand to suspend from the binder ofa moldingmachine a hollow stem containing a spring to the end of which a solid pointis secured which co-operates with a Vstem rising from a moving pattern to make a sprue or gate, and on the other hand it is not new to dispense with the stem on the pattern altogether and just elongate the point of the other part to take its place. Now, my invention differs from such sprue-sticks in that it employs no spring, and hence dispenses with the point and projects through and co-operates with a templet interposed between the pattern and flask, whereby the perfect clearance of the stick in forming a perfectly true and straight gate or sprue is insured.

What I claim is- 1. The sprue-stick having arecessed or hollow member co-operating with the movable binder of a molding-machine, and a fixed member secured to a fixed pattern and telescoping in said hollow member as thelatter is moved toward -it,combined with the said pattern, the templet through which the fixed member projects, and the binder, substantially as and for the purpose described.

2. A binder having an opening and adjacent lugs, combined with a movable member of a sprue-stick havinga turn-button to cooperate with said opening and lugs, and a fixed member, templet, pattern, and operating mechanism therefor, substantially as described.

In testimony whereof I have hereunto set my hand this 12th day of May, A. D. 1885.

ARTHUR RICE.

Witnesses:

GEO. S. STEEL, OHAs. VAN DUsEN. 

